/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --primary-color: #667eea;
    --primary-hover: #5568d3;
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e1e8ed;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.15);
    --success: #2ecc71;
    --error: #e74c3c;
    --warning: #f39c12;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    height: -webkit-fill-available;
    height: 100dvh;
    min-height: 100vh;
    min-height: 100dvh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    height: -webkit-fill-available;
    height: 100dvh;
    position: relative;
    touch-action: none;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-color);
    transition: margin-right 0.3s ease;
    overflow: hidden;
    touch-action: none;
}

.main-content.sidebar-open {
    margin-right: 400px;
}

/* 顶部导航栏 */
.header {
    background: var(--card-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
    position: relative;
    z-index: 10;
    flex-wrap: nowrap;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.new-chat-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.2s;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

.new-chat-btn:hover {
    background: var(--bg-color);
    color: var(--success);
}

.settings-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.settings-btn:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

/* 身份设置 */
.identity-setting {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.identity-input-group {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.identity-input-group label {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    flex-shrink: 0;
}

.identity-input-group input {
    flex: 1;
    padding: 0.6rem 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.identity-input-group input:focus {
    border-color: var(--primary-color);
}

.confirm-btn {
    padding: 0.6rem 1.2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.confirm-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

/* 聊天容器 */
.chat-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 2rem;
    padding-bottom: 1rem;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
    overscroll-behavior-y: contain;
    overscroll-behavior-x: none;
    will-change: scroll-position;
}

.messages {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 消息样式 */
.message {
    display: flex;
    gap: 1rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    flex-shrink: 0;
    overflow: hidden;
}

.message.agent .message-avatar {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.message-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.message-content {
    max-width: 70%;
    padding: 1rem 1.25rem;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    line-height: 1.6;
}

.message.user .message-content {
    background: var(--primary-color);
    color: white;
}

.message-meta {
    font-size: 0.7rem;
    color: #999;
    margin-top: 0.25rem;
    text-align: right;
}

.message.user .message-meta {
    text-align: left;
}

/* 消息段落 */
.message-paragraph {
    margin: 0.5rem 0;
    line-height: 1.8;
}

/* 消息图片容器 */
.message-image-wrapper {
    margin: 0.75rem 0;
    border-radius: 8px;
    overflow: hidden;
    max-width: 100%;
}

/* 消息图片 */
.message-image {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    display: block;
    border-radius: 4px;
    background: var(--bg-color);
    transition: all 0.2s;
}

.message-image:hover {
    opacity: 0.9;
}

/* 消息图片占位符 */
.message-image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: var(--bg-color);
    border: 1px dashed var(--border-color);
    border-radius: 4px;
    min-height: 120px;
    color: var(--text-secondary);
}

.message-image-placeholder svg {
    margin-bottom: 0.5rem;
    opacity: 0.5;
}

.message-image-placeholder .loading-text {
    font-size: 0.85rem;
}

/* 加载状态 */
.message-image-wrapper.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* 错误状态 */
.message-image-wrapper.error {
    border: 1px solid var(--error);
}

.message-image-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: rgba(231, 76, 60, 0.1);
    border-radius: 4px;
    color: var(--error);
}

.message-image-error svg {
    margin-bottom: 0.5rem;
}

.message-image-error .error-text {
    font-size: 0.85rem;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

/* 输入区域 */
.input-area {
    background: var(--card-bg);
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    position: relative;
    z-index: 10;
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
}

.input-wrapper {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

#messageInput {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px; /* iOS Safari 需要 16px 防止自动缩放 */
    resize: none;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
    max-height: 150px;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

#messageInput:focus {
    border-color: var(--primary-color);
}

.send-btn {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.send-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.cat-btn {
    padding: 0.75rem;
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cat-btn:hover:not(:disabled) {
    background: var(--bg-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.cat-btn:active {
    transform: translateY(0);
}

.cat-btn img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    right: -400px;
    top: 0;
    width: 400px;
    height: 100vh;
    background: var(--card-bg);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
    overscroll-behavior-y: contain;
    overscroll-behavior-x: none;
}

.sidebar.open {
    right: 0;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.close-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.close-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

/* 侧边栏区块 */
.sidebar-section {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-section h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* 用户信息 */
.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 8px;
}

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-status {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* 管理员登录按钮 */
.admin-login-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.admin-login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* API 配置 */
.config-item {
    margin-bottom: 1rem;
}

.config-item label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.config-item input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.config-item input:focus {
    border-color: var(--primary-color);
}

.save-config-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.save-config-btn:hover {
    background: var(--primary-hover);
}

/* 弹窗 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--card-bg);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.close-modal-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.close-modal-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-desc {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    resize: vertical;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
    line-height: 1.6;
}

.form-group textarea:focus {
    border-color: var(--primary-color);
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    border-color: var(--primary-color);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.btn-cancel {
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-cancel:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-submit {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.btn-submit:hover {
    background: var(--primary-hover);
}

.btn-submit .btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loading {
    display: inline;
}

/* 加载遮罩 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-overlay p {
    color: white;
    font-size: 1.1rem;
}

/* Toast 消息 */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 4000;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--error);
}

/* 打字机动画 */
.typing-indicator {
    display: inline-flex;
    gap: 4px;
    align-items: center;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 基础布局 */
    .sidebar {
        width: 100%;
        right: -100%;
    }

    .sidebar.open {
        right: 0;
    }

    .main-content.sidebar-open {
        margin-right: 0;
    }

    /* 顶部导航栏 */
    .header {
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }

    .logo {
        font-size: 1.1rem;
    }

    .new-chat-btn {
        font-size: 0.85rem;
        padding: 0.4rem 0.75rem;
    }

    .new-chat-btn span {
        display: inline-block;
        max-width: 80px;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .settings-btn {
        padding: 0.5rem;
    }

    /* 添加侧边栏遮罩 */
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .sidebar-overlay.show {
        opacity: 1;
        visibility: visible;
    }

    /* 身份设置 */
    .identity-input-group {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .identity-input-group label {
        font-size: 0.9rem;
    }

    .identity-input-group input {
        width: 100%;
        font-size: 0.9rem;
    }

    .confirm-btn {
        width: 100%;
        padding: 0.6rem;
    }

    /* 图片预览 */
    .preview-close-btn {
        width: 40px;
        height: 40px;
        top: 10px;
        right: 10px;
    }

    .preview-controls {
        bottom: 20px;
        padding: 0.5rem 0.75rem;
    }

    .preview-zoom-btn,
    .preview-reset-btn {
        width: 36px;
        height: 36px;
    }

    .preview-reset-btn {
        font-size: 0.85rem;
        min-width: 60px;
    }

    /* 聊天容器 */
    .chat-container {
        padding: 1rem 0.75rem;
        padding-bottom: 2rem;
    }

    .messages {
        max-width: 100%;
        gap: 1rem;
        padding: 0 0.5rem;
    }

    /* 消息样式 */
    .message {
        gap: 0.75rem;
    }

    .message-avatar {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }

    .message-content {
        max-width: 85%;
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }

    .message-meta {
        font-size: 0.7rem;
        margin-top: 0.4rem;
    }

    /* 输入区域 */
    .input-area {
        padding: 0.875rem 0.75rem;
        padding-bottom: max(0.875rem, env(safe-area-inset-bottom));
    }

    .input-wrapper {
        max-width: 100%;
        gap: 0.5rem;
    }

    #messageInput {
        font-size: 0.95rem;
        padding: 0.6rem 0.75rem;
        max-height: 120px;
    }

    .send-btn {
        padding: 0.75rem;
        font-size: 0.9rem;
        min-width: 48px;
        min-height: 48px;
    }

    .send-btn span {
        display: none;
    }

    .send-btn svg {
        width: 20px;
        height: 20px;
        display: block;
        margin: 0 auto;
    }

    .cat-btn {
        padding: 0.75rem;
        min-width: 48px;
        min-height: 48px;
    }

    .cat-btn img {
        width: 24px;
        height: 24px;
    }

    /* 侧边栏遮罩 - 移动端 */
    .sidebar-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .sidebar-overlay.show {
        opacity: 1;
        visibility: visible;
    }

    /* 侧边栏 */
    .sidebar {
        width: 85%;
        right: -85%;
    }

    .sidebar.open {
        right: 0;
    }

    .sidebar-header {
        padding: 1rem;
    }

    .sidebar-header h2 {
        font-size: 1.25rem;
    }

    .sidebar-section {
        padding: 1rem;
    }

    .sidebar-section h3 {
        font-size: 1rem;
    }

    .section-desc {
        font-size: 0.85rem;
    }

    /* 身份设置 */
    .identity-input-group {
        gap: 0.5rem;
    }

    .identity-input-group label {
        font-size: 0.85rem;
    }

    .identity-input-group input {
        font-size: 0.85rem;
        padding: 0.5rem 0.6rem;
    }

    .confirm-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    /* 用户信息 */
    .user-info {
        padding: 0.75rem;
        gap: 0.75rem;
    }

    .user-avatar {
        width: 45px;
        height: 45px;
    }

    .user-avatar svg {
        width: 28px;
        height: 28px;
    }

    .user-name {
        font-size: 0.95rem;
    }

    .user-status {
        font-size: 0.8rem;
    }

    /* 按钮样式 */
    .admin-login-btn {
        padding: 0.875rem;
        font-size: 0.95rem;
    }

    .admin-login-btn svg {
        width: 18px;
        height: 18px;
    }

    /* API 配置 */
    .config-item input {
        font-size: 0.9rem;
    }

    .save-config-btn {
        font-size: 0.95rem;
    }

    /* 弹窗 */
    .modal {
        width: 95%;
        margin: 1rem;
        max-height: 90vh;
        overflow-y: auto;
    }

    .modal-header {
        padding: 1rem;
    }

    .modal-header h2 {
        font-size: 1.15rem;
    }

    .modal-body {
        padding: 1rem;
    }

    .modal-desc {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }

    .form-group textarea {
        font-size: 0.95rem;
        padding: 0.6rem;
    }

    .modal-actions {
        flex-direction: column;
    }

    .btn-cancel,
    .btn-submit {
        width: 100%;
        padding: 0.75rem;
    }

    /* Toast 消息 */
    .toast {
        bottom: 1.5rem;
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
        max-width: 90%;
    }

    /* 文件查看器 */
    .file-viewer-container {
        width: 100%;
        height: 100%;
        max-width: none;
        border-radius: 0;
    }

    .file-viewer-header {
        padding: 1rem;
    }

    .file-viewer-header h2 {
        font-size: 1.15rem;
    }

    .file-viewer-body {
        flex-direction: column;
    }

    .file-list-panel {
        width: 100%;
        height: 40%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .file-list-panel.collapsed {
        width: 48px;
        height: 100%;
    }

    .file-list-header {
        padding: 0.75rem;
    }

    .file-list-header h3 {
        font-size: 1rem;
    }

    /* 文件列表操作按钮 */
.file-list-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.upload-modal-btn,
.refresh-files-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.upload-modal-btn:hover,
.refresh-files-btn:hover {
    background: var(--card-bg);
    color: var(--primary-color);
}

.file-upload-controls {
    padding: 1rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.file-upload-controls input[type="text"] {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.file-upload-controls input[type="text"]:focus {
    border-color: var(--primary-color);
}

.choose-upload-btn,
.upload-file-btn {
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.choose-upload-btn:hover:not(:disabled),
.upload-file-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.upload-file-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 文件上传弹窗内的输入框 */
.form-group input[type="text"][readonly] {
    background: var(--bg-color);
    color: var(--text-secondary);
    cursor: default;
}

.form-group code {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--bg-color);
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--primary-color);
}

    .file-list {
        padding: 0.25rem;
    }

    .file-item {
        padding: 0.6rem 0.75rem;
    }

    .file-item-icon {
        width: 16px;
        height: 16px;
    }

    .file-item-name {
        font-size: 0.9rem;
    }

    .file-content-panel {
        height: 60%;
    }

    .file-content-header {
        padding: 0.75rem 1rem;
    }

    .file-content-header h3 {
        font-size: 1rem;
    }

    #fileEditor {
        padding: 1rem;
        font-size: 0.9rem;
    }

    .save-file-btn {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }

    .save-file-btn svg {
        width: 14px;
        height: 14px;
    }

    /* 文件上传控件 */
    .file-upload-controls {
        padding: 0.75rem;
    }

    .file-upload-controls input {
        flex: 1;
        min-width: 0;
    }

    .choose-upload-btn,
    .upload-file-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    /* 打字机指示器 */
    .typing-indicator span {
        width: 6px;
        height: 6px;
    }
}

    /* 小屏幕适配（小于 480px） */
@media (max-width: 480px) {
    /* 顶部导航栏 */
    .header {
        padding: 0.625rem 0.75rem;
        gap: 0.5rem;
    }

    .logo {
        font-size: 1rem;
    }

    .new-chat-btn {
        font-size: 0.8rem;
        padding: 0.375rem 0.625rem;
    }

    .new-chat-btn span {
        max-width: 60px;
    }

    .header-actions {
        gap: 0.375rem;
    }

    .settings-btn {
        padding: 0.5rem;
    }

    .settings-btn svg {
        width: 20px;
        height: 20px;
    }

    /* 身份设置 */
    .identity-input-group input {
        font-size: 0.85rem;
        padding: 0.5rem 0.6rem;
    }

    .confirm-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    /* 聊天容器 */
    .chat-container {
        padding: 0.75rem 0.5rem;
    }

    .messages {
        padding: 0;
    }

    /* 消息样式 */
    .message-avatar {
        width: 32px;
        height: 32px;
    }

    .message-content {
        max-width: 90%;
        padding: 0.625rem 0.875rem;
        font-size: 0.9rem;
    }

    /* 输入区域 */
    .input-area {
        padding: 0.75rem 0.625rem;
        padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
    }

    .input-wrapper {
        gap: 0.375rem;
    }

    #messageInput {
        padding: 0.625rem;
        font-size: 1rem;
        max-height: 100px;
    }

    .send-btn {
        padding: 0.625rem;
        min-width: 44px;
        min-height: 44px;
    }

    .send-btn svg {
        width: 20px;
        height: 20px;
    }

    .cat-btn {
        padding: 0.625rem;
        min-width: 44px;
        min-height: 44px;
    }

    .cat-btn img {
        width: 20px;
        height: 20px;
    }

    /* 侧边栏 */
    .sidebar {
        width: 90%;
        right: -90%;
    }

    /* 消息 meta 信息 */
    .message-meta {
        display: none;
    }

    /* 弹窗 */
    .modal {
        width: 92%;
        margin: 0.75rem;
    }

    .modal-header h2 {
        font-size: 1.05rem;
    }

    /* Toast */
    .toast {
        padding: 0.75rem 1.25rem;
        font-size: 0.85rem;
    }

    /* 文件列表 */
    .file-list-panel {
        height: 35%;
    }

    .file-content-panel {
        height: 65%;
    }

    .file-item {
        padding: 0.5rem 0.625rem;
    }

    .file-item-name {
        font-size: 0.85rem;
    }

    #fileEditor {
        padding: 0.75rem;
        font-size: 0.85rem;
    }

    /* 文件上传 */
    .file-upload-controls {
        flex-wrap: wrap;
    }

    .file-upload-controls input {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .choose-upload-btn,
    .upload-file-btn {
        flex: 1;
    }
}

/* 统一管理页面 */
.manager-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2500;
}

/* 上传弹窗 - z-index 需要高于管理页面 */
#uploadModal,
#imageUploadModal,
#imageDetailModal {
    z-index: 2600;
}

.manager-container {
    width: 90vw;
    height: 90vh;
    max-width: 1600px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.manager-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.manager-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.manager-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.refresh-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.refresh-btn:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

.close-manager-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.close-manager-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.manager-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* 标签页 */
.manager-tabs {
    display: flex;
    padding: 0 1.5rem;
    border-bottom: 2px solid var(--border-color);
    background: var(--bg-color);
}

.tab-btn {
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    position: relative;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-btn svg {
    width: 16px;
    height: 16px;
}

/* 管理内容区域 */
.manager-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.manager-content.active {
    display: flex;
}

.files-panel,
.images-panel {
    width: 100%;
    display: flex;
    overflow: hidden;
}

/* 文件查看器样式复用 */
.file-viewer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2500;
}

.file-viewer-container {
    width: 90vw;
    height: 90vh;
    max-width: 1400px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.file-viewer-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-viewer-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.close-file-viewer-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.close-file-viewer-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.file-viewer-body {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* 左侧文件列表面板 */
.file-list-panel {
    width: 300px;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    background: var(--bg-color);
    transition: width 0.3s ease;
}

/* 移动端收起状态的文件列表 */
.file-list-panel.collapsed {
    width: 48px;
}

.file-list-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-list-header h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.file-list-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.refresh-files-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.refresh-files-btn:hover {
    background: var(--card-bg);
    color: var(--primary-color);
}

/* 文件列表操作按钮 */
.file-list-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.upload-modal-btn,
.refresh-files-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.upload-modal-btn:hover,
.refresh-files-btn:hover {
    background: var(--card-bg);
    color: var(--primary-color);
}

.file-upload-controls {
    padding: 1rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.file-upload-controls input[type="text"] {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.file-upload-controls input[type="text"]:focus {
    border-color: var(--primary-color);
}

.choose-upload-btn,
.upload-file-btn {
    padding: 0.5rem 1rem;
    background: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.choose-upload-btn:hover:not(:disabled),
.upload-file-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.upload-file-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 文件上传弹窗内的输入框 */
.form-group input[type="text"][readonly] {
    background: var(--bg-color);
    color: var(--text-secondary);
    cursor: default;
}

.form-group code {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--bg-color);
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--primary-color);
}

.file-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.file-item {
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    margin-bottom: 0.125rem;
}

.file-item:hover {
    background: var(--card-bg);
}

.file-item.active {
    background: var(--primary-color);
    color: white;
}

.file-item-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.file-item-icon.folder {
    color: #f39c12;
}

.file-item-icon.file {
    color: var(--text-secondary);
}

.file-item.active .file-item-icon {
    color: white;
}

.file-item.active .file-item-icon.folder {
    color: white;
}

.file-item-name {
    flex: 1;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 收起/展开按钮 */
.collapse-file-list-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.collapse-file-list-btn:hover {
    background: var(--card-bg);
    color: var(--primary-color);
}

/* 收起状态下的文件列表头部 */
.file-list-panel.collapsed .file-list-header h3,
.file-list-panel.collapsed .file-list-actions {
    display: none;
}

.file-list-panel.collapsed .file-list-header {
    justify-content: center;
}

/* 收起状态下的文件列表内容 */
.file-list-panel.collapsed .file-list {
    display: none;
}

/* 展开按钮（收起时显示） */
.expand-file-list-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
    display: none;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.file-list-panel.collapsed .expand-file-list-btn {
    display: flex;
}

/* 右侧文件内容面板 */
.file-content-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.file-content-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-color);
}

.file-content-header h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 500;
}

.save-file-btn {
    padding: 0.5rem 1.25rem;
    background: var(--success);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.save-file-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.save-file-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.file-editor-wrapper {
    flex: 1;
    overflow: hidden;
}

#fileEditor {
    width: 100%;
    height: 100%;
    border: none;
    padding: 1.5rem;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: none;
    outline: none;
    background: var(--card-bg);
    color: var(--text-primary);
}

.file-empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.file-empty-state svg {
    opacity: 0.3;
    margin-bottom: 1rem;
}

.file-empty-state p {
    font-size: 1rem;
}

/* ====================
   移动端触摸优化
   ==================== */

/* 增大触摸目标的点击区域 */
button,
.cat-btn,
.send-btn,
.settings-btn,
.new-chat-btn {
    min-height: 44px;
    min-width: 44px;
}

/* 优化触摸反馈 */
button:active,
.send-btn:active,
.cat-btn:active,
.new-chat-btn:active,
.settings-btn:active {
    opacity: 0.7;
    transform: scale(0.98);
}

/* 防止双击缩放 */
button,
input,
textarea {
    touch-action: manipulation;
}

/* 优化滚动性能 */
.chat-container,
.sidebar,
.modal-body,
.file-list,
.image-list {
    -webkit-overflow-scrolling: touch;
    will-change: scroll-position;
}

/* ====================
   Safari 和 iOS 专属优化
   ==================== */

/* 修复 Safari 的滚动回弹问题 */
.chat-container,
.file-list {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
    overscroll-behavior-x: none;
    touch-action: pan-y;
}

/* 防止页面级别的滚动 */
html,
body {
    overflow: hidden;
    touch-action: none;
}

/* 修复 Safari 的按钮样式 */
button {
    -webkit-appearance: none;
    appearance: none;
}

/* 修复 Safari 的输入框样式 */
input,
textarea {
    -webkit-appearance: none;
    appearance: none;
    border-radius: 0;
}

/* 修复 Safari 的 textarea 滚动条 */
#messageInput,
#authTokenInput,
#fileEditor {
    -webkit-appearance: none;
    resize: none;
}

/* 修复 iOS 安全区域适配问题 */
@supports (padding: max(0px)) {
    .header {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
        padding-top: max(1rem, env(safe-area-inset-top));
    }

    .input-area {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
        padding-bottom: max(2rem, env(safe-area-inset-bottom));
    }

    .user-selector {
        padding-left: max(1.5rem, env(safe-area-inset-left));
        padding-right: max(1.5rem, env(safe-area-inset-right));
    }

    .chat-container {
        padding-left: max(2rem, env(safe-area-inset-left));
        padding-right: max(2rem, env(safe-area-inset-right));
    }

    /* 移动端适配 */
    @media (max-width: 768px) {
        .header {
            padding-left: max(0.75rem, env(safe-area-inset-left));
            padding-right: max(0.75rem, env(safe-area-inset-right));
            padding-top: max(0.875rem, env(safe-area-inset-top));
            padding-bottom: max(0.75rem, 0);
        }

        .user-selector {
            padding-left: max(1rem, env(safe-area-inset-left));
            padding-right: max(1rem, env(safe-area-inset-right));
        }

        .chat-container {
            padding-left: max(1rem, env(safe-area-inset-left));
            padding-right: max(1rem, env(safe-area-inset-right));
        }

        .input-area {
            padding-left: max(0.875rem, env(safe-area-inset-left));
            padding-right: max(0.875rem, env(safe-area-inset-right));
            padding-bottom: max(0.875rem, env(safe-area-inset-bottom));
        }
    }

    /* 小屏幕适配 */
    @media (max-width: 480px) {
        .header {
            padding-left: max(0.625rem, env(safe-area-inset-left));
            padding-right: max(0.625rem, env(safe-area-inset-right));
            padding-top: max(0.75rem, env(safe-area-inset-top));
        }

        .chat-container {
            padding-left: max(0.5rem, env(safe-area-inset-left));
            padding-right: max(0.5rem, env(safe-area-inset-right));
        }

        .input-area {
            padding-left: max(0.625rem, env(safe-area-inset-left));
            padding-right: max(0.625rem, env(safe-area-inset-right));
            padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
        }
    }
}

/* 修复 Safari 的滚动条隐藏问题 */
.chat-container::-webkit-scrollbar,
.file-list::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.chat-container::-webkit-scrollbar-track,
.file-list::-webkit-scrollbar-track {
    background: transparent;
}

.chat-container::-webkit-scrollbar-thumb,
.file-list::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.chat-container::-webkit-scrollbar-thumb:hover,
.file-list::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* 修复 iOS Safari 的 100vh 问题 */
.main-content,
.sidebar {
    height: 100vh;
    height: -webkit-fill-available;
    height: fill-available;
    min-height: 100vh;
    min-height: 100dvh;
}

/* 修复 Safari 的焦点样式 */
button:focus,
input:focus,
textarea:focus {
    outline: none;
    -webkit-focus-ring-color: transparent;
}

/* 修复 Safari 的字体渲染 */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 修复 Safari 的按钮点击延迟和手势冲突 */
button,
.send-btn,
.confirm-btn,
.save-config-btn,
.admin-login-btn,
.save-file-btn,
.choose-upload-btn,
.upload-file-btn,
.btn-cancel,
.btn-submit,
.close-btn,
.close-modal-btn,
.close-file-viewer-btn,
.refresh-files-btn {
    cursor: pointer;
    touch-action: manipulation;
    -webkit-user-select: none;
    user-select: none;
}

/* 滚动容器需要独立的触摸行为 */
.chat-container,
.file-list,
.sidebar {
    touch-action: pan-y;
}

/* 确保输入框可以正常交互 */
input,
textarea {
    touch-action: auto;
}

/* 修复 Safari 的输入框聚焦时的背景色 */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px white inset;
    -webkit-text-fill-color: #2c3e50;
}

textarea:-webkit-autofill,
textarea:-webkit-autofill:hover,
textarea:-webkit-autofill:focus,
textarea:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px white inset;
    -webkit-text-fill-color: #2c3e50;
}

/* 修复 Safari 的模态框滚动 */
.modal-overlay,
.file-viewer-overlay {
    -webkit-overflow-scrolling: touch;
    touch-action: none;
}

.modal-body {
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
    overflow-y: auto;
}

/* 修复 Safari 的文本选择 */
.message-content {
    -webkit-user-select: text;
    user-select: text;
}

/* 修复 Safari 的渐变背景 */
.logo {
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 修复 Safari 的 SVG 渲染 */
svg {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

/* 图片管理器样式调整 */
.image-manager-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2500;
}

.image-manager-container {
    width: 90vw;
    height: 90vh;
    max-width: 1600px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.image-manager-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.image-manager-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.image-manager-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.upload-image-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.upload-image-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.refresh-images-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.refresh-images-btn:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

.close-image-manager-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.close-image-manager-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.image-manager-body {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.image-tag-panel {
    width: 250px;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    background: var(--bg-color);
}

.image-tag-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.image-tag-header h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.image-tag-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.tag-item {
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    color: var(--text-primary);
}

.tag-item:hover {
    background: var(--card-bg);
    color: var(--primary-color);
}

.tag-item.active {
    background: var(--primary-color);
    color: white;
}

.tag-item svg {
    flex-shrink: 0;
}

.tag-item span {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tag-item-empty {
    padding: 2rem 1rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.image-list-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
}

.image-list-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.image-list-header h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.image-list-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.image-count {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.image-list {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.image-card {
    background: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    height: 320px;
}

.image-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.image-thumbnail {
    flex: 1;
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    overflow: hidden;
    position: relative;
}

.image-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity 0.3s ease;
    opacity: 1;
}

.image-thumbnail img.loaded {
    opacity: 1;
}

.image-thumbnail svg {
    width: 64px;
    height: 64px;
    opacity: 0.5;
}

.image-info {
    padding: 1rem;
}

.image-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.3;
    max-height: 2.6em;
}

.image-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
    max-height: 2.8em;
}

.image-actions {
    padding: 0.5rem 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.image-action-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.image-action-btn:hover {
    background: var(--card-bg);
    color: var(--error);
}

.image-empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.image-empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.image-empty-state p {
    font-size: 1rem;
}

/* 图片详情弹窗 */
.image-detail-modal {
    max-width: 900px;
    width: 90vw;
    max-height: 90vh;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.image-detail-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.image-detail-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.image-detail-body {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.image-detail-preview {
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    height: 400px;
    flex-shrink: 0;
}

.image-detail-preview img {
    max-width: 100%;
    height: 100%;
    width: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.image-detail-meta {
    padding: 1.5rem;
}

.image-detail-meta h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.detail-row {
    display: flex;
    margin-bottom: 0.75rem;
    align-items: flex-start;
}

.detail-label {
    width: 100px;
    flex-shrink: 0;
    color: var(--text-secondary);
    font-weight: 500;
}

.detail-value {
    flex: 1;
    color: var(--text-primary);
}

.detail-tag {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    margin-bottom: 0.25rem;
}

/* 图片管理器按钮 */
.image-manager-btn {
    width: 100%;
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
    margin-top: 0.5rem;
}

.image-manager-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--bg-color);
}

.image-manager-btn svg {
    flex-shrink: 0;
}

/* 图片预览放大组件 */
.image-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 5000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.image-preview-overlay.show {
    opacity: 1;
    visibility: visible;
}

.image-preview-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.preview-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all 0.2s;
    z-index: 10;
}

.preview-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.preview-image-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 80px 20px 100px 20px;
    overflow: auto;
}

#previewImage {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    cursor: grab;
}

#previewImage:active {
    cursor: grabbing;
}

.preview-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    z-index: 10;
}

.preview-zoom-btn,
.preview-reset-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 8px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all 0.2s;
}

.preview-zoom-btn:hover,
.preview-reset-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.preview-reset-btn {
    width: auto;
    padding: 0 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    min-width: 70px;
}